Pipe-coupling.



No. 690,2l3. Patented nec. 3|, lam.

c. L. wlLMoT.

PIPE COUPLING.

(No Model.)

WITNESSES INVENTOR ff@ f f4 MM MM ffm L, @um www,

l f l K UNITED STATES PATENT GEEICE.

i CLARENCE L. WILMOT, OF PITTSBURG, PENNSYLVANIA.

PIPE-COUPLING.

SPECIFIGATION forming part of Letters Patent No. 690,213, dated December31, 1901.

Application filed March 28, 1901. Serial No. 53,268. (No model.)

T0 all whom t marginali/Gern.'

Be it known that I, CLARENCE L. WILMOT, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a new and usefulPipe-Coupling, of which the following is a full, clear, and exactdescription, reference` being had to the accompanying drawings, formingpart of this specication, in which- Figures l and 2 are crossfsectionsof my improved coupling as applied to rivetless pipe, being taken on thelines I I and II II, respectively, of Fig. 3. Fig. 3 is an enlargeddetail longitudinal section showing a portion of the joint; and Fig. 4is a view similartto Fig. 3, showing a modified form.

My invention relates to the couplings for joining the ends of thin orlight walled tubing or pipes, and is especially designed for use withrivetless pipe, wherein the longitudinal plate or plates are securedtogether at their` meeting edges by locking-bars, though it may beapplied to any form of pipes or tubes; and its object is to provideimproved mechanism for compressing the gasket or gaskets and obtaining apositive outer bearing thereon.

In the drawings, in which I show the preferred form of my invention asapplied to rivetless pipe formed with locking-bars, 2 represents a fixedcentral ring, preferably formed of Wrought-iron and having angularprojections 3 3 at its edges, which I have shown as of V form. This ringis preferably provided with a central annular gaging projection 4, whichserves-to indicate when it has been slid to the proper place over theopen end of the pipe and centers it in position over the joint. I mayform this ring with a central outer rib 5 to give additional strength,though this is not necessary. At the 'opposite edges of this centralring 2 I provide gaskets or compressible packingrings 6 6, having attheir inner edges V- shaped annular recesses entered by the projectionsof the central ring 2 and at their outer edges similar recesses withwhich engage annular V-shaped projections on the compressing-rings 7 7.Each of these coupling-rings 7 is preferably formed in one piece, withperforated bosses 8 to receive the bolts prevented from turning by lugsor stops lO. To reduce the weight of these coupling-rings, they may beprovided with arc-shaped recesses 11,-forming a light but strong shellbetween the bosses.

The pipes to be connected are shown as formed of semicircularhalves l2,having their edges peened up or enlarged, and secured together bylocking-bars 13, of general H shape, compressed thereon, and the rings2, G, and 7 are provided with outwardly-bent or recessed portions Il toreceive the outer portions of the locking-bars. Y

In using the coupling the ring 2 is slipped over the open end of onepipe and the other pipe pushed within it, these pipes each having one ofthe gaskets and coupling-rings placed around it. The bolts areithenthrust through the holes in the coupling-rings, and pressure beingapplied by the nuts the coupling-rings are drawn together, and thecoacting projections and recesses of these rings and the gaskets give aneven positive pressure upon the outer parts of the gaskets, forcing themagainst the pipe and eectively closing the joint.

In the form of Fig. 4 the coupling-rings 7 are provided with curved orU-shaped inner recesses, and the gaskets 6 are provided withcorresponding projecting portions, which enter these recesses. In thisform the action is substantially similar to that of the Iirst form, theinterengaging projections and recesses giving a positive inward axialpressure,which distorts the gaskets and closes' the joints.

The advantages of my invention result from the peculiar arrangementofthe compressingrings and gaskets relative to each other, since theprojections on the rings give the positive connection and bearingnecessary to effectively compress the gaskets and inclose the joint. Thecoupling may be easily and cheaply made, is comparatively light, and maybe ap` plied to any form or shape of pipes or tubes.

Many variations may be made in the form and arrangement of the centralspacing-ring, the gaskets, and the compressing-rings without departingfrom my invention.

1. A pipe-coupling, comprising acentral spacing-ring having oppositeV-shaped pro- 9, which connect the two rings, and may be jections, apairof gaskets having recesses en- ICO gagng said projections, a pair ofcouplingouter recesses, and a pair of coupling-rings rings arranged toslide upon the outer face having annular projections entering the outerof the spacing-ring, and having inWardly-prorecesses of the gaskets,said coupling-rings j ecting ring portions engaging the outer partshaving connecting-bolts; substantially as de- I5 5 of the gaskets, andconnecting-bolts extendscribed.

ingthrough the coupling-rings; substantially In testimony whereof I havehereunto set as described. my hand.

2. A pipe-coupling comprising a central CLARENCE L. VVILMOT.spacing-ring, having opposite V-shaped pro- Witnesses: 1o jections, apair of gaskets having recesses en- I-I. M. CORWIN,

gaging said projections and provided with G. B. BLEMING.

